Biology Practice: Ecosystem (Mock Test 5 - Ultimate Comprehensive Mastery)
1. Which statement best defines the "Trophic Level" of an organism in an ecosystem?
2. In a parasitic food chain, which of the following is true regarding the "Pyramid of Numbers"?
3. "Biological Magnification" is most hazardous to which level of the food chain?
4. Which of the following describes the role of "Nitrobacter" in the Nitrogen Cycle?
5. "Commensalism" is an interaction where:
6. The pyramid of ______ is the only ecological pyramid that is NEVER inverted.
7. Which of these is an "Edaphic" abiotic factor?
8. What happens to the energy lost at each trophic level (90%)?
9. "Saprotrophs" differ from "Phagotrophs" because they:
10. The interconnectedness of food chains in a "Food Web" provides what advantage to the ecosystem?
11. A "Scavenger" like a vulture primarily feeds on:
12. Which of the following describes "Denitrification"?
13. In a "Biomass Pyramid" for a forest, why is the base usually very wide?
14. The term "Anthropogenic Ecosystem" refers to which of the following?
15. Why does the "10% Law" limit the number of steps in a food chain?
16. The "Carbon Cycle" is essentially a balance between ______ and ______.
17. An organism that breaks down detritus into smaller particles is called a:
18. Which gas is released as a byproduct of decomposers breaking down organic matter in anaerobic conditions (like a swamp)?
19. The "Standing State" of an ecosystem refers to the total amount of:
20. What is the fundamental cause of the "Unidirectional" flow of energy?
